Air Quality Lab — Montréal, Canada
Air Quality Profile
Montréal reports an annual PM2.5 of 8.3 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Montréal
Canada
CanadaAnnual Average
GoodWHO annual classification
8.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
9.99.9 µg/m³ — Good
9.29.2 µg/m³ — Good
7.97.9 µg/m³ — Good
5.85.8 µg/m³ — Good
7.37.3 µg/m³ — Good
8.28.2 µg/m³ — Good
8.78.7 µg/m³ — Good
9.79.7 µg/m³ — Good
8.68.6 µg/m³ — Good
7.87.8 µg/m³ — Good
8.68.6 µg/m³ — Good
8.28.2 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
9.99.9 µg/m³ — Good
9.29.2 µg/m³ — Good
7.97.9 µg/m³ — Good
5.85.8 µg/m³ — Good
7.37.3 µg/m³ — Good
8.28.2 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.78.7 µg/m³ — Good
9.79.7 µg/m³ — Good
8.68.6 µg/m³ — Good
7.87.8 µg/m³ — Good
8.68.6 µg/m³ — Good
8.28.2 µg/m³ — Good
Best months: Apr–May, OctWorst months: Jan–Feb, Aug
Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Canada
Montréal: 8.3 µg/m³. Typical range in Canada: 5.3–6.6 µg/m³. Low anchor: Glace Bay, 3.8 µg/m³. High anchor: Toronto, 7.6 µg/m³.
194 cities tracked